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WO2002021074A3 - Optical amplification in coherence reflectometry - Google Patents

Optical amplification in coherence reflectometry Download PDF

Info

Publication number
WO2002021074A3
WO2002021074A3 PCT/DK2001/000573 DK0100573W WO0221074A3 WO 2002021074 A3 WO2002021074 A3 WO 2002021074A3 DK 0100573 W DK0100573 W DK 0100573W WO 0221074 A3 WO0221074 A3 WO 0221074A3
Authority
WO
WIPO (PCT)
Prior art keywords
light field
reflected light
sample arm
well
combining means
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/DK2001/000573
Other languages
French (fr)
Other versions
WO2002021074A2 (en
Inventor
Peter E Andersen
Anders Bjarklev
Andreas Tycho
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Riso National Laboratory
Original Assignee
Riso National Laboratory
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Riso National Laboratory filed Critical Riso National Laboratory
Priority to AU8571801A priority Critical patent/AU8571801A/en
Priority to US10/363,323 priority patent/US6853457B2/en
Priority to EP01964941A priority patent/EP1432960A2/en
Priority to AU2001285718A priority patent/AU2001285718B2/en
Priority to CA002421113A priority patent/CA2421113C/en
Publication of WO2002021074A2 publication Critical patent/WO2002021074A2/en
Anticipated expiration legal-status Critical
Publication of WO2002021074A3 publication Critical patent/WO2002021074A3/en
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/4795—Scattering, i.e. diffuse reflection spatially resolved investigating of object in scattering medium
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B9/00—Measuring instruments characterised by the use of optical techniques
    • G01B9/02—Interferometers
    • G01B9/0209—Low-coherence interferometers
    • G01B9/02091—Tomographic interferometers, e.g. based on optical coherence
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
    • A61B5/0062—Arrangements for scanning
    • A61B5/0066—Optical coherence imaging
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
    • A61B5/0082—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes
    • A61B5/0084—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes for introduction into the body, e.g. by catheters
    • A61B5/0086—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes for introduction into the body, e.g. by catheters using infrared radiation

Landscapes

  • Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Radiology & Medical Imaging (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

The present invention relates to an apparatus and a method for optical coherence reflectometry, in particular for optical coherence tomography. The invention particularly relates to the route of the light field in the sample arm. The reflected light field in the sample arm is amplified before being received by a combining means, said combining means being capable of receiving the reflected light field from the sample arm as well as the second reflected light field from the reference arm. Thereby, it is possible to direct substantially all light energy in the sample arm to the combining means, and to obtain fully the utilisation of the amplification of the reflected light field since preferably only the reflected light field is amplified by the optical amplifier. This leads to an improved signal-to-noise ratio (SNR) whereby an increase of the maximal penetration depth is obtained. Thereby, the apparatus is useful for obtaining optical biopsies of transparent as well as non-transparent tissues as well as new technical fields wherein the increased SNR allows the use of the present apparatus.
PCT/DK2001/000573 2000-09-04 2001-09-04 Optical amplification in coherence reflectometry Ceased WO2002021074A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AU8571801A AU8571801A (en) 2000-09-04 2001-09-04 Optical amplification in coherence reflectometry
US10/363,323 US6853457B2 (en) 2000-09-04 2001-09-04 Optical amplification in coherence reflectometry
EP01964941A EP1432960A2 (en) 2000-09-04 2001-09-04 Optical amplification in coherence reflectometry
AU2001285718A AU2001285718B2 (en) 2000-09-04 2001-09-04 Optical amplification in coherence reflectometry
CA002421113A CA2421113C (en) 2000-09-04 2001-09-04 Optical amplification in coherence reflectometry

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA200001318 2000-09-04
DKPA200001318 2000-09-04

Publications (2)

Publication Number Publication Date
WO2002021074A2 WO2002021074A2 (en) 2002-03-14
WO2002021074A3 true WO2002021074A3 (en) 2004-04-15

Family

ID=8159694

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK2001/000573 Ceased WO2002021074A2 (en) 2000-09-04 2001-09-04 Optical amplification in coherence reflectometry

Country Status (5)

Country Link
US (1) US6853457B2 (en)
EP (1) EP1432960A2 (en)
AU (2) AU2001285718B2 (en)
CA (1) CA2421113C (en)
WO (1) WO2002021074A2 (en)

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US11382653B2 (en) 2010-07-01 2022-07-12 Avinger, Inc. Atherectomy catheter
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US9949754B2 (en) 2011-03-28 2018-04-24 Avinger, Inc. Occlusion-crossing devices
EP2768406B1 (en) 2011-10-17 2019-12-04 Avinger, Inc. Atherectomy catheters and non-contact actuation mechanism for catheters
US9345406B2 (en) 2011-11-11 2016-05-24 Avinger, Inc. Occlusion-crossing devices, atherectomy devices, and imaging
WO2013172970A1 (en) 2012-05-14 2013-11-21 Avinger, Inc. Atherectomy catheters with imaging
EP2849660B1 (en) 2012-05-14 2021-08-25 Avinger, Inc. Atherectomy catheter drive assemblies
EP2849636B1 (en) 2012-05-14 2020-04-22 Avinger, Inc. Optical coherence tomography with graded index fiber for biological imaging
US11284916B2 (en) 2012-09-06 2022-03-29 Avinger, Inc. Atherectomy catheters and occlusion crossing devices
US9498247B2 (en) 2014-02-06 2016-11-22 Avinger, Inc. Atherectomy catheters and occlusion crossing devices
JP6291025B2 (en) 2013-03-15 2018-03-14 アビンガー・インコーポレイテッドＡｖｉｎｇｅｒ， Ｉｎｃ． Optical pressure sensor assembly
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US9854979B2 (en) 2013-03-15 2018-01-02 Avinger, Inc. Chronic total occlusion crossing devices with imaging
EP3019096B1 (en) 2013-07-08 2023-07-05 Avinger, Inc. System for identification of elastic lamina to guide interventional therapy
JP6539669B2 (en) 2014-02-06 2019-07-03 アビンガー・インコーポレイテッドＡｖｉｎｇｅｒ， Ｉｎｃ． Atherectomy catheter and crossing obstruction device
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Also Published As

Publication number Publication date
CA2421113C (en) 2009-12-01
WO2002021074A2 (en) 2002-03-14
US20030184758A1 (en) 2003-10-02
AU2001285718B2 (en) 2006-11-02
EP1432960A2 (en) 2004-06-30
US6853457B2 (en) 2005-02-08
CA2421113A1 (en) 2002-03-14
AU8571801A (en) 2002-03-22

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